Electrochemical Modification of the Steel Surface for the Corrosion Protection in Aqueous Media. Influence of the Products of Dissolution of Electronegative Metals

2016 ◽  
Vol 51 (5) ◽  
pp. 599-609
Author(s):  
N. A. Belousova ◽  
M. I. Donchenko ◽  
Yu. S. Gerasimenko
Keyword(s):  
Corrosion Protection ◽  
Steel Surface ◽  
Aqueous Media ◽  
Media Influence ◽  
Electrochemical Modification

scholarly journals Synthesis and Characterization of New Polymers Bearing Tetrazole and Triazole Moieties with Studying their Corrosion Protection of Stainless Steel Surface in Hydrochloric Acid

2020 ◽  
pp. 2467-2478
Author(s):  
Amaal S. Sadiq ◽  
Entesar O. Al-Tamimi
Keyword(s):  
Stainless Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
316L Stainless Steel ◽  
Electrochemical Polymerization ◽  
Triazole Ring ◽  
Phenyl Isothiocyanate ◽  
Stainless Steel Surface ◽  
Nano Materials ◽  
Atomic Force

A series of polymers containing1,2,4-triazole  and tetrazole groups in their main chains were synthesized through several steps. Poly(acryloyl hydrazide) was first prepared and then subjected to a hydrazide reaction with phenyl isothiocyanate to give a 1,2,4-triazole ring (2). This polymer was introduced into a reaction with chloro acetylchloride to yield polymer (3), which was refluxed with sodium azide to give polymer (4). Polymer (5) was synthesized by the reaction of polymer (4) with  acrylonitrile in the presence of NH4Cl as a catalyst. Finally, polymer (6) was synthesized by the electrochemical polymerization of polymer (5) using  316L stainless steel as an anti-corrosion coating. Polymer-coated and uncoated stainless steel was tested for corrosion safety in a solution of 0.1 M HCl, followed by Tafel and Potentiostatic procedures at a temperature of 293 K. Nano materials such as ZnO were applied to the monomer solution at different concentrations to enhance the corrosion resistance of the 316L stainless steel surface. The results showed that the performance values of corrosion protection for the polymer coating were increased with the introduction of the nano materials. Furthermore, 13C-NMR, 1H-NMR, and FTIR were recorded to confirm the structures of the poylmers, while their physical properties were tested using atomic force microscope (AFM) and scanning electron microscope (SEM).

Application of Self Assembled 6-aminohexanol layers for corrosion protection of 304 stainless steel surface

2012 ◽  
Vol 520 (15) ◽  
pp. 4990-4995 ◽  
Author(s):  
Fei Yu ◽  
Shougang Chen ◽  
Houmin Li ◽  
Lejiao Yang ◽  
Yansheng Yin
Keyword(s):  
Stainless Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
304 Stainless Steel ◽  
Stainless Steel Surface ◽  
Self Assembled

scholarly journals Different Setup of Capacitive Coupling Protection System on Mild Steel

2021 ◽  
Vol 2080 (1) ◽  
pp. 012024
Author(s):  
Wan Mohd Haqqi Wan Ahmad ◽  
Siti Hawa Mohamed Salleh ◽  
Shaiful Rizam Shamsudin ◽  
Rajaselan wardan ◽  
Mohd Subhi Din Yati ◽  
...  
Keyword(s):  
Weight Loss ◽  
Surface Morphology ◽  
Mild Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
Electrical Current ◽  
Capacitive Coupling ◽  
Current Consumption ◽  
Current Voltage ◽  
Experimental Surface

Abstract A Capacitive Coupling Corrosion Protection (CCCP) technology based on coupler pads was investigated. The layout of the coupler pads on the mild steel surface was studied to get the best outdoor corrosion protection. A square wave of current/voltage is supplied to the steel surface for 72 hours via a copper coupler pad in three arrangements, i.e., single, double-sided, and opposite configurations. The efficiency of the CCCP configuration was assessed by measuring electrical current consumption, weight loss, and post-experimental surface morphology observations. It is found that the current consumption of 600 μA/cm2 in the double-sided configuration is practically stable. The lowest weight loss and clean surface morphology also prove that the double-sided configuration can improve the corrosion protection of mild steel. It was discovered that by employing more coupling pads on both sides of the metal sheet, the excessive positive charge capable of producing oxidation of mild steel could be easily discharged.

scholarly journals Effect of zero charge corrosion protection (ZCCP) on the carbon steel surface in 3.5% NaCl solution

2019 ◽  
Vol 701 ◽  
pp. 012038
Author(s):  
Shaiful Rizam Shamsudin ◽  
Zin Wen Sim ◽  
Rajaselan Wardan ◽  
Nadia Nadhira Mohd Jamalullalel ◽  
Azmi Rahmat
Keyword(s):  
Carbon Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
Nacl Solution ◽  
Zero Charge ◽  
Carbon Steel Surface

Electrochemical degradation of trichloroacetic acid in aqueous media: influence of the electrode material

2013 ◽  
Vol 34 (3) ◽  
pp. 383-393 ◽  
Author(s):  
M. D. Esclapez ◽  
M. I. Díez-García ◽  
V. Sáez ◽  
P. Bonete ◽  
José González-García
Keyword(s):  
Electrode Material ◽  
Trichloroacetic Acid ◽  
Aqueous Media ◽  
Media Influence ◽  
Electrochemical Degradation

scholarly journals Synthesis of new high molecular weight phosphorylated chitosans for improving corrosion protection

2019 ◽  
Vol 91 (3) ◽  
pp. 509-521 ◽  
Author(s):  
Clément Coquery ◽  
Claire Negrell ◽  
Nicolas Caussé ◽  
Nadine Pébère ◽  
Ghislain David
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Corrosion Protection ◽  
Phosphonic Acid ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Metallic Surface ◽  
Partial Hydrolysis ◽  
Solution Ph ◽  
Lower Efficiency

Abstract Two grades of chitosan [chitosan 30000 g mol−1 (N-chitosan 30) and 250000 g mol−1 (N-chitosan 250)] were functionalized by the Kabachnik–Fields reaction. To obtain the highest phosphonic ester grafting rate (55% and 40% for the N-chitosan 30 and N-chitosan 250, respectively), the pH must be kept constant during the reaction (pH=5). Then, a partial hydrolysis of the ester functions was carried out in HCl medium to generate phosphonic acid functions up to 25% and 20% for the N-chitosan 30 and N-chitosan 250, respectively. It was shown that the grafting of phosphonic acids on chitosan significantly reduced the dynamic viscosity. Afterwards, electrochemical impedance measurements were performed in an aqueous solution (pH=5) in the presence of either N-chitosans or P-chitosans (3 wt.%). The two native N-chitosans were little adsorbed onto the carbon steel surface and the corrosion protection was low. In contrast, the impedance results in the presence of the 30000 g mol−1 phosphorylated chitosan (P-chitosan 30) evidenced the beneficial effect of grafted phosphonic acid on its adsorption on the steel surface. The lower efficiency of the 250000 g mol−1 (P-chitosan 250) was attributed to its high molecular weight which made difficult the interactions between the phosphonic groups and the metallic surface.

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